- News Home
17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
- About Us
ScienceShot: Meet the Saber-Toothed Squirrel
2 November 2011 2:03 pm
Scrat, the fictional saber-toothed squirrel from the Ice Age films, may not be so fictional after all. Researchers have discovered the fossil remains of a 94-million-year-old squirrel-like critter with a long, narrow snout and a pair of curved saber-fangs that it would have likely used to pierce its insect prey. The creature, pieced together from skull fragments unearthed in Argentina and dubbed Cronopio dentiacutus, was not ancestral to us or any living mammal. Instead, researchers report online today in Nature, it belonged to an extinct group called dryolestoids, a cadre of fuzzy mammals that scurried about in the shadow of long-necked dinosaurs, as in the artist's impression above. The new discovery extends the known record of the dryolestoid mammals in South America back 60 million years from what was previously known. There were no acorns around at the time though, so Cronopio—like Scrat—would have had to do without them.
See more ScienceShots.